Rockwell Automation 1786-series ControlNet Coax Media Planning and Installation Guide - Manual (Page 59)

Publication CNET-IN002B-EN-P - June 2010 59
Install a ControlNet Coax Media System Chapter 3
Test for Electrical Shorts
and Continuity 1. Using the NetLinx Media Checker (catalog number 1788-MCHKR) as
the preferred method for continuity testing, attach the connector end of
the cable to the port on top of the Media Checker.
2. As a secondary method, you can also use an ohmmeter or continuity
tester to test for a short between the connector body and pin.
3. Use shorting clips to connect a temporary short between the pin and the
connector body at one end of the cable.
4. At the other end of the cable, use the NetLinx Media Checker, an
ohmmeter, or continuity tester to test for electrical continuity.
5. If the resistance reading indicates a short exists, use your wire cutters to
cut off the connector, install a new connector, and begin testing again;
otherwise, proceed to the next section.
IMPORTANT
Replace the trunk cable section if problems persist with
the cable after completing these tests.
LENGTH
WIRE MAP TEST
SETUP ENTER
OFF
MediaChecker
1788-MCHKR
31195-m
20166
Shorting Clip
Shorting Clip